Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsRefraction at curved surface/LensEasy2 minPYQ_2011

PhysicsEasysingle choice

Two thin lenses of focal lengths $20 cm$ and $25 cm$ are placed in cotact. The effective power of the combination is

Answer:

Solution:

Hints: $P = P_{1} + P_{2}$ $= \frac{1}{f _{1}} + \frac{1}{f _{2}} = \frac{100}{20} + \frac{100}{25} = 5 + 4 = 9 D$

Stream:WBJEESubject:PhysicsTopic:Geometrical OpticsSubtopic:Refraction at curved surface/Lens

⏱ 2mℹ️ Source: PYQ_2011

Loading discussions...